Burn 24. Product blew my mind.
Really is an amazing product for use just about anytime. I love it on a cut and recomp especially.
OP - my suggestion would be do look into:
Arachidonic Acid - I have used this many times over the years and never regretted it. Strength increases are fantastic and size as well.
ABE - I haven't used this myself, but the reviews for bulking are all very solid. I plan to give it a go in the future when I feel like I want to add some size again.
Magnitropin - While I'm not 100% sold on Epicatechin as a mass-builder per-say, I do find the formula very interesting. Certainly feel like it will be worth a shot at some point here.
The above all look very interesting, with X-Factor (ArA), being my number one recommendation for pure mass/strength gains. I noticed that you used and liked Alphamax, which would make a fantastic stack with any of the above. Hard to beat the price for what you get, especially considering the price of Forskolin 95 solo. The only stack I would take note of is with ABE, as both have Forskolin. With that said, you would do well with any of the products solo, so don't feel that you need to stack with Alphamax (it sure would be fun though).